Tsukasa, a college student, is rescued from an attack by a devil, one of many vampires that can blend in among the human population. Anzai, her savior, is a half-devil who exploits his supernatural gifts as a member of a shadowy polic...

Anzai, suffering badly after a run-in with a sniper, is rescued at the last minute by a mysterious blond devil who gives him enough human blood to heal his wounds. Embarrassed by the way he lost control after tasting human blood, Anz...

Anzai grapples with Lee's bombshell—that drinking human blood can have regenerative, strengthening powers on devil bodies—and Lee offers to share what he knows if Anzai's comrades hide him away. Meanwhile, Zero Seven, the sniper, ...